
Paying only $1.36 at Tulsa Gas Technologies and $1.25 at the ONG stations for fuel.
I live in Oklahoma, which exports natural gas to other states. I work for a natural gas company. I have natural gas delivered to my house via pipeline. Why do I buy gasoline to make my cars run?
"The passage of the natural gas subsidy is the push the nascent sector needs to get over the proverbial hump and change what has been a slow, short-term order growth story. Without it, the natural gas vehicle stocks may not have much upside for the next few quarters, unless, of course, the legislative outlook changes yet again."What is the potential game-changer in this bill? Federal tax incentives for BI-FUEL vehicles. Oklahoma gives the same tax credit for bi-fuel as it does for dedicated, because that's what it takes to drive adoption - bi-fuel will create the demand for CNG which will drive the construction of fueling infrastructure. There are just not enough CNG fueling options yet to drive broad dedicated CNG adoption.
"The biggest challenge is infrastructure not only in the state but throughout the U.S.," Chris Hoffman, Oklahoma State University's manager of transportation services, said. "And there's going to be a payback on fuel costs, but not a total payback."As readers of this blog know, I paid less for the CNG-powered 2010 Honda Civic GX after federal and state tax credits than it would have cost me to buy a gasoline-powered 2010 Honda Civic LX. And, of course, the fuel is $1.00 per gallon cheaper...
As I've shared in this blog, there are multiple, convenient locations to fuel with CNG in Oklahoma. The process is faster than fueling with gasoline. See all available CNG fueling locations at cngprices.com.
And then there's the filling-up part. Some companies may make kits to take natural gas straight from the home meter, but the process reportedly is slow. And getting to the station is hardly like pulling into the local QuikTrip. CNG stations are spread out, unmanned and require a credit card.
"The natural gas-powered Honda Civic GX continues its stronghold on the number one spot for the seventh year running."
Make and Model | Specifications a | Emission Standardb | MPG: City | MPG: Hwy | Green Score |
HONDA CIVIC GX c | 1.8L 4, auto [CNG] | Tier 2 bin 2 / PZEV | 24 | 36 | 57 |
TOYOTA PRIUS | 1.8L 4, auto CVT | Tier 2 bin 3 / PZEV | 51 | 48 | 52 |
HONDA CIVIC HYBRID | 1.3L 4, auto CVT | Tier 2 bin 2 / PZEV | 40 | 45 | 51 |
SMART FORTWO CONVERTIBLE / COUPE | 1.0L 3, manual | Tier 2 bin 5 / ULEV II | 33 | 41 | 50 |
HONDA INSIGHT | 1.3L 4, auto CVT | Tier 2 bin 3 | 40 | 43 | 50 |
FORD FUSION HYBRID / MERCURY MILAN HYBRID | 2.4L 4, auto CVT | Tier 2 bin 3 / PZEV | 41 | 36 | 47 |
TOYOTA YARIS | 1.5L 4, manual | Tier 2 bin 5 / ULEV II | 29 | 36 | 46 |
NISSAN ALTIMA HYBRID | 2.5L 4, auto CVT | PZEV | 35 | 33 | 46 |
MINI COOPER | 1.6L 4, manual [P] | Tier 2 bin 5 / ULEV II | 28 | 37 | 45 |
CHEVROLET COBALT XFE / PONTIAC G5 XFE | 2.2L 4, manual | Tier 2 bin 5 / PZEV | 25 | 37 | 45 |
HYUNDAI ACCENT BLUE | 1.6L 4, manual | Tier 2 bin 5 / ULEV II | 27 | 36 | 45 |
HONDA FIT | 1.5L 4, auto | Tier 2 bin 5 / ULEV II | 28 | 35 | 45 |
[CNG] denotes compressed natural gas fuel. [P] denotes premium gasoline "auto CVT" denotes continuously variable automatic transmission. a Certain other configurations of these models (with different transmissions or meeting different emission standards) score nearly as well. b A listing with two emission standards (e.g., Tier 2 bin 2/ PZEV) denotes a single vehicle carrying both a Federal and a California emission certification. Green Scores for such listings reflect the cleaner of the two certifications. c Compressed natural gas (CNG) vehicle fuel economy given in gasoline-equivalent miles per gallon. |
Natural gas (or any gas) when confined in a fixed space will increase in pressure as the ambient temperature rises or decrease in pressure as the temperature falls. This is true for natural gas in a vehicle's storage tank as well as the air in the vehicle's tires. The magnitude of the change in pressure is a function of the size of temperature change, starting pressure, and the gas composition. Since the term "natural gas" represents a broad range of gas compositions as distributed in the US, IGT used a mean natural gas composition.
The temperature-pressure relationship figure presented (below) can be used to determine the change in pressure corresponding to a change in temperature for natural gas. Six reference lines have been plotted corresponding to six different starting gas pressures at 70 deg F. As an example, point A represents natural gas in a storage container at 3,000 psig and 70 deg F. Should the gas temperature drop to 40 deg F, one can expect the gas pressure in the tank to drop to 2,596 psig (point B)... It is important to note that the change in pressure does not represent a change in the amount of gas (energy) within the tank. The gas simply contracted or expanded as a result of the change in temperature.